Grof's 2012 paper uses the Mayan calendar as an excuse to get high and become superhuman

Here's another asinine Grof quote from another asinine Grof paper:

In 1948, after many years of systematically studying mythologies of
various cultures of the world, Joseph Campbell published his groundbreaking
book The Hero with a Thousand Faces, which in the following
decades profoundly influenced research and understanding in the field
(Campbell 1968). Analyzing a broad spectrum of myths from various parts
of the world, Campbell realized that they all contained variations of one
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universal archetypal formula, which he called the monomyth. This was the
story of the hero, either male or female, who leaves his or her home ground
or is forcefully separated from it by external circumstances and, after
fantastic adventures and ordeals culminating in psychospiritual death and
rebirth, returns to his original society radically transformed - as an
enlightened or deified being, a healer, seer, or great spiritual teacher.
In Campbell's own words, the basic formula for the hero's journey
can be summarized as follows: “A hero ventures forth from the world of
common day into a region of supernatural wonder; fabulous forces are
encountered and a decisive victory is won; the hero comes back from this
mysterious adventure with the power to bestow boons on his fellow men.”
Campbell's inquisitive and incisive intellect went beyond simply recognizing
the universality of this myth over time and space. His curiosity drove him to
ask what makes this myth universal. Why does the theme of the hero's
journey appeal to cultures of all times and countries, even if they differ in
every other respect?
Campbell’s answer has the simplicity and unrelenting logic of all
brilliant insights: the monomyth of the hero's journey is a blueprint for the
transformative crisis, which all human beings can experience when the deep
contents of the unconscious psyche emerge into consciousness. The hero’s
journey describes nothing less than the experiential territory that an
individual must traverse during times of profound transformation. The story
of the Mayan Hero Twins is a classical example of Campbell’s Hero’s
Journey. It belongs to a vast array of archetypal motifs that we can
experience in holotropic states.
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I hope that the above discussion adequately addressed the first
question that I asked earlier in my presentation: “How could ancient
Mayans two thousand years ago discover anything that would be
relevant for humanity in the twenty-first century?”